How to calculate the motor winding resistance ?
- 21 Answers
- 115106 Views
- Forbis, L&T, OEGI, VTI, I also Faced
- E-Mail Answers
Answer Posted / muhammad kamran
although ohm-meter test is thorough enough but its not
complete...to find true result 1st ohm-meter reading is
taken and then in 2nd step a low voltage ac signal is
applied (using step-down transformer)normally 6:1 of
original operating voltage both voltage and current is
taken and Z-l(total impedence is taken) as unit is
performing in ac region not dc while ohm meter is dc
test.... why use this test?
not always the clear result is given by ohm meter test. a
winding may show balance state by ohm-meter but any
irregularity can be detected by AC-impedence test to be sure
| Is This Answer Correct ? | 14 Yes | 15 No |
Post New Answer View All Answers
How to protect a Dosing pumps/any sensitive equipment (single phase) from surge protection inside a food factory.
Hi all I had applied for the RRB test in the ELECRICAL category. I would be pleased if any of you can sent me previous year question papers. Please forward the question papers to varshashahi@yahoo.com Thanks and regards Varsha
How to findout raw or ups power? its not indicated in socket,
how to erect roof control panel?
what is POTT and PUTT explain?
Why armature rheostat is kept in maximum position?
what is servo motor & how does it work.
How shall i select the value of capacitor or inductor in a system?
1)What is a Triode? What are its uses? 2) What is a Triac? 3) What is a Thyristor?
Difference between Lugs and Thimbles
How do the synchronizing lamps indicate the correctness of phase sequence between existing and incoming alternators?
how the aircraft outer body and inner body is separated ?
Why line VTG = √3 phase VTG in star? How?
Which type of air compressor is used now a days in the market. Keeping in mind of energy efficiency and maintenance points. Relevant documents may also be sent on mentioned email ids.
Difference between transition and diffusion capacitance
